Re: [RFC] First CRDA integration work

Luis R. Rodriguez
2008-06-11T10:09:51Z

On Wed, Jun 11, 2008 at 1:28 AM, Joerg Pommnitz <pommnitz@yahoo.com> wrote:
> Hello Luis,
> I did not read the complete patch but closely looked at the CRDA design picture. I have a comment:
> The company I work for has special regulatory approval to use amplified WLAN on certain channels (up to 4W). The nodes additionally have non-amplified WLAN adapters that fall under the normal regulatory requirements. It would be nice if your work allowed to specify such cases, e.g. have different regulatory restrictions for differen cards in the same machine. In our case we would like to restrict the amplified interface to the channels it is allowed to run on.

Hm, interesting. Well you can simply use a custom db.txt with a custom
PGP private key to sign it and also provide your customers with a
custom CRDA which uses this. All you'd have to do is modify the keys
and db.txt. This of course doesn't work to help comply if you have
extra regulatory efforts on the drivers using the EEPROM of firmware
so the next best thing would be to add a struct ieee80211_regdomain to
each struct wiphy. I considered this too but this starts to move away
from the centralized scheme. Its good you mention this case though.
Can you elaborate a bit more on it. Why do you need two separate WLAN
devices on one node where each one of them is using very different
regulatory rules? Do they both use the same frequency ranges?

Luis